US1712511A

US1712511A - Mining machine

Info

Publication number: US1712511A
Application number: US601745A
Authority: US
Inventors: Morgan Olive Eugenie
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-11-18
Filing date: 1922-11-18
Publication date: 1929-05-14
Anticipated expiration: 1946-05-14

Description

E. C. MORGAN MINING MACHINE May 14, 1929.

4 Sheets-Sheet Filed Nov. 18, 192? 4 Sheets-Shesat 2 EDMUND c. MOQGAH.

WXKQRM N 0N 1 v \F 1 1 Nu BN mm m E hm) m of il mmlr E. C. MORGAN MINING MACHINE Filed Nov. 18, 1 92? E. c. MORGAN MINING MACHINE 4 sheets-sheet 4 Filed Nov. 18, 192? EDMUND c. MORGAN. 63, 21% mm Patented ay 14, 1929.

mute {is'rArES A ear OFFICE.

lilDlVllJ'I ll] C. MORGAN, OF NEW YORK, N. Y.; OLIVE EUGENIE MORGAN EXECUTRIX F SAID EDMUND G. llIORGAN, DEGEAF=ED.

raimne MACIEIINE.

a no nm filed, me n]; 18, 1922, S ra in. 601,745.

i /ly invention relates tofmining machines and one of its objects is the provision of improved apparatus for cutting out sections from the mine wall, dividing such sections by an additional cutter, and removing the cut-out sections. H I

A further object of the invention is the provision of improved mechanism for cutting a hor'zontal kert in the face of a mine vein. I

Another objectot the invention is the provision of improved mechanism for breaking into smaller piecessections oi mineral out out from the .ace of the veins. 1

lllore partiailarly it is theohjectoii the pnsent invention to combinewith a loopchain core cutter, a plane heri cutter. 1tor cutting the core longitudinally to div'de the same into smaller sections to facilitate the removal thereof from the mine/ wall.

Other objects of the invention will appear he" aa'ltter, thenovel features andcomhinations being set forth in the appended claims. 1

Referring to the accompanying drawing,

gut-e 1 is a plan view of a complete mininp; and loading; machine, with my improvements included therein.

1+ E3 is a sectional elevational view of the construction shown in l ie'. 3 is an elevatioiial view of the hertcutter 'l OlftllVhlllflg the core longit ulinally.

Fig. 1 is a plan view of the: fucture shown in Fig. 3, with certain portons in sectional plan, to illustrate details oi conslrruztion. y i .1 5

il in'. 5 is a section of Fig. l on the line 5-5 looking in the direction. otthe arrows.

li in. 6 is an enlarged fragmentary see tional elevation to illustrate the construction used for assembling the parts of the horizon tal keri cutter. ii

Fig. 'l is a fragmentary view showing; the hit socket and the means for holding): the hit therein as applied. to the horizontal hertcutter; V i y Fig: 8 is a detail view showing the relation between the horizontal. keriicutterand the abutment drum.

l i r. 9 is a detail of theloall bearingto the horizontal hert eutter, and

5 1O a plan'view of thestrueture shown in Fig. 9.

fonds .oii-the standards 6.

and a supplemental frame 1 which is pivoted to the main {time at 5 between the vertical standards 6. The main frame 3 may be mounted on' skids 7, 7 on a mine floor, and may he made or such weight, strength and material. as will be suitable. The main fame is also provided with suitable root jacks 8, 8, which are mounted at the upper By means of these root jacks the main. frame 3 may be firmly anchored in adjusted position in the mine, particularly to res st swinging of the main frame or rearward movement thereof.

The supplementalframe 4; comprises upper horizontally extendinghraclret arms and a lower horizontally extending platform, which serve to support the various parts of the automatic mechanism. A motor, pref ,erahly an electric motor, and shown diaarnn'iatieally at9 in Fig. 1, mounted on rend of the platform 19 at one side The pinion 11 on the shaft of ,ele motor "9 meshes with the gear 12 which keyed to the transverse shaft 13, the ends oi: which are mounted in bearings 1.4;,14: at thenpper rear portion of the supplemental. frame t. At the central portion of? the shaft 13 is a worm 15 meshing with the horizontal worm gear 16 shown in Fig. 2.

.Thio worn'i gear 16 is mounted loosely on the upper endo'l: the shaft 40 at the lower end of which is a sprocket 17 meshing with the sprocket chain This sprocket chain is provided with a plurality of laterally exteruli flights 19, 19, which move over the :upper suritace ot the platform 10. The sprocket chain flight conveyor 1, 19., is endless audits forward portion meshes with a sprocket wheel 20 mounted on a vertical shat i )etween the pla form 10 and the lower V mounted on the intermediate frame 21 and provided with a worm 28 meshing with the worm wheel 29. The shaft 30 of the worm wheel 29 is also mounted on the intermediate frame 21 and carries a sprocket wheel 31 as shown in Fig. 2. It should be noted that Fig. 2 shows the loop chain core cutter in its central longitudinal position after being swung 90 from the position shown in Fig. 1. Fig. 2 shows all of the parts in side elevation when the chain cutter extends forward in central position.

Meshing with the sprocket wheel 31 is a sprocket chain 32 extending around the frame 33, which'is provided with suitable guidewaysfor said sprocket chain and is supported by the intermediate frame 21. The sprocket chain 32 is provided with cutters34extending laterally or axially relative to the cutter frame 33 as shown in Fig. 1.

The sprocket chain 32 may be tightened or loosened by means of'the

nuts

35 and 36 which are threaded on the screw-threaded rod 37 extending rearwardly from the central portion of the chain cutter frame 33.

It should be observed, however, that the screw-threaded rod 37 is fixed to the rectangular block which extends'from and is rigid with the frame 21. This block is provided with guide grooves along its upper and lower surfaces to' receive the horizontal spaced apart bars at the rear portion of the cutter frame 33. Through the vertical cross piece at the rear end of the bar extends the screw-threaded rod 37 so that when the nut 35 is loosened and the nut 36 tightened, the cutter frame will be moved to the left either to make more slack in the chain or to permit the radial length'of the cutter to be appreciably changed. If necessary a link may be removed in order to prevent the chain from becoming too slack when the desired change in the radial length or range of the cutter is obtained. By loosening the nut 36 and tightening the nut 35 the cutter frame may be moved outwardly relatively to the upright axis of rotation and thus slack may be taken out of the chain or the radial length increased; If desired, an extra link may be inserted in order to secure a proper increase in the cutting range without causing the chain to become too tight. After the desired adjustments have been made and one or more links inserted or withdrawn, the nuts 35 and 36 are both tightened to hold the cutter frame firml in adjusted position relative to the axial rame 21.

In order to control the operation of the chain cutter I have provided a clutch 38 which may be of an suitable or well known construction, provi ed with a groove 39 to be engaged by an operating lever. \Vhen the current to the electric motor 9 is turned on to rotate the motor in the pro er direction, motion will be transmitted to t to transverse shaft 13 and thence through the worm 15 and worm gear 16 to the vertical shaft 40, the upper end of which is journaled in the bearing 41 at the rear end of the horizontal bracket arm 42 attached to the cross piece 25 of the supplemental frame. The rotation of the vertical shaft imparts motion to the sprocket 17 which in turn actuates the endless flight conveyor 18, 19 and im arts motion to the sprocket wheel 20, the pinion 26, the gear 27, the worm 28, the worm wheel 29, the sprocket wheel 31 and the chain cutter 32. The arrow 43 indicates the direction of movement of the flight conveyor, and the arrow 44 indicates the direction of movement of the chain cutter.

The entire chain cutter is also advanced laterally over a proximately a semi-circular path during t e cutting operation. The means for advancing the cutter chain laterally to secure arcuate feed thereof comprises a peripherally grooved wheel 45 connected to the upper end of the intermediate frame 21, so as to rotate therewith on the bearing 22 and on the bearing in the platform 10 provided for the sprocket wheel .20. To the wheel 45, at 46, is secured one end of a rope 47, the other end of which is secured to a grooved wheel 48, mounted on a vertical shaft carrying the worm wheel 49. It should be observed, however, that the worm wheel 49 is mounted loosely on the shaft 50, and that a clutch 51 is provided for connecting the worm wheel 49 to the wheel 48, so as to transmit motion to the latter from the shaft: 50. This may be done by suitable means engagin the groove 52 of the movable member of the clutch 51 in a well known manner. The upper end of the shaft 50 is journaled in the rear end of the bracket arm 23 and the lower end of the shaft 50 is journaled in the bracket arm 53, extending from a portion of the supplemental frame.

Meshing with the worm wheel 49 is a worm 54 on the transverse shaft 13. Therefore, when the electric motor 9 is operated in the proper direction, motion will be transmitted to the worm gear 49 sov as to rotate the same in anti-clockwise direction. \Vhen the clutch 51 is thrown in, motion will be transmitted through the wheel 48, the rope 47, and the wheel 45, to the intermediate frame 21, thereby swinging the cutter frame ltlt) from right to let't, looking forward or in {H1 enti-eloclm-iee direction When viewed in plan. filthoin z'h it hove shown it jow clutch 51, ring other St i tlDlG and Well known clutch L L may be used if desired. The same is true it th respect to the other clutcl shovvn.

structed core opening exending therethrongh. i l hen the chain cutter 32 is re siibstentiell central; oosition. the sheic i? ,i L J the section cut out would conform to the unobstructed core opening, when such chain c tter is used. alone or Without a dividing cutter.

The foregoing description applies to the struetui shown in my aforesaid Potent No. 1 825 031, dated 16, 191.9, which does not disclose a dividing cutter, hereafter do s-rcsV-ibed.

ll hen at complete semicircle is made by the Cllztlll core cutter 32 the section of material cut out Will he crescent shaped in plan view us ilhistrn' d it 70, in Fig. 1. Ii'nisinnch as this ent n of material cut out too 3; rec for the conveyor to handle, it is desirable to break up the some into smaller se ions. in order to accomplish this result, l provide automatic locking 'niechzinisln for locking the cutter ironic in its thiel position and connected to the cutter trmne inechenisrn to exert 2i bending force on the cresccnt-sl1eped section at one end tl'iereot to hrcolt up the same into smaller sections s indicated by the irregular dot on d dosh lines [36, 5' end In order to lock the cuter trenie against being; retracted I provide on the upper surface of the Wheel 4th a ca ch 59 which presents vertical face toward the cutter frame and an inclined force in the opposite direction. Between the enter ends out the bracket arms 23 end 24!: is pivoted 2i lotch lev 60 Which will be 1' .mdby the inclined Sl'llLtCG oi": the catch 59 when the Wheel lti eppix'iziches the position shown in hill lines in 1. The latch her 60 being pivotcdito the sn niilementel frame at (it is {Free to drop 0t iti-i own Weight Whe: the etch 59 178%(39 under and beyond the some.

Till

7 re ot the :h 59 will. then i ch her (it) and prevent the (but tor :rreine hein g retracted it it is attr'ininted to do so. in some instences may he desirzihle to con .ie the lateral odvoreo Eng inovein t oil the cutter no end it is therefore proton o provide no additional catch 62 on the um or surface of tl 0 Wheel so the 1 t' ii cneigji th: hitch her 60.

he vert= entreoe the 1e cot e" 'roinc may be locked i v the coreh e a no;

he catch 62 is also rovided wit 1 en inchned surface over tl at portion whnh is dislodged, with the eilect ot visible in plain View. Therefore when the wheelto rotates n sutiicient distiince tort-i clockwise the catches 5i) and 62 will lift the latch bar (50, but when is uttenipted to rotote the Wheel t5 in oeioeh-wii-ie dir ction the latch her tit) electing with either the catch 6:2 or the cat 1 59 will. act its it locking nlechenieni to prccnt ouch renrn movement. The locllting ineclmnisin they be reiQltSGi'h 'hmvever hjv I most manually the latch lever e sulli rent distance.

It :ihit rope or met-oi belt oil: is connected pivotoll v at (lg to the trout end oi i 'i cut :er tronie 25E? opposite the cutters 34L. This rope or belt (Tliiiitlt'-l around the crescentshaped nines of cool cut out from the mine Well hy the loop chitin core cut" 353, int

icr i l thence toward. the rear, Where it is secured to the drum (35 mounted on shzrit it bearings for which are provited on the plotttorni l0 and in the crow-i o co 253. llio lv mounted on the vertical shortt (S6 is o. vv'orni Wheel 6? which meshes with the Worm (ital on the timiiiverse driving she-Ft 18 l l ch the electric motor 9 is ()PGIl'tmQCl motion will be 'anienitted to the worn: Wheel 67 to rotate the shine on onti-cloehuflse direction. "i l hen the clutch (if) is thrown in mo tion will be 'trzineinittcd to the ve e l shaft 66 and the drum to exert ii 1m :53; force on the belt (34-.

Now, when prising}; the latch her tit) and the in iocliing; pr the loop ch the locking); mechanism, com i 59 is "1 core cut-- moved, toward the position ind i-czited by the dot and thish lir 64; in Fig" 1, eihl in doing; so at bending}; force cr ted on one-halt oil the crescent-shoped cool the some into 5.: eller s t by the irregular cot :rod (h and. lltshould tir'O be ohserved t the nmteriel is broken up into smolle" tions it is inovel ivln'illy or wirtiolly over to the :ior'w l ercuete end oi the p 10. The forward ednj'e ot the plot-mm indicated by the till, line (Y in lj Ptigidl v ionnec o the fire the ernr-i 'i'l. Wh' 1, e, end no? in Fig. h to constitute o spit ironic 21 at huh tile-ore: ends 0" the iii-in 'i']. is no tiprig, which is adm t ed. to act cure the heeesnorv bcndi ing up the .arescent-slMined. one; wool into sniz'iller sections whet, such moss, Ltlllinihl eroru'id this ohntineiit by the pull out i will on the belt (Eat. it Will be spider a nee 71 may he so iocoted or nrro; with respect to the loop choin core that when the ter is loclred. in osiiti in one of the redial err x- 71 will project di rectly tor-word zis sishownin .lf 1, to term :1

'Vntl thot the strong abutment. However, the cylindrical drum 7 1- may itself be made of sufiicient strength to act as a fulcrum on which to break up the crescent-shaped mass of dislodged material into smaller sections.

In order to move the material onto the platform in such position that the conveyor flights 19 Will move the material toward loading position the lever 60 is lifted after substantially half of the crescent-shaped mass of material has been wrapped around the drum 74, as shown by the dot and dash lines in Fig. 1. When the locking mechanism is released by the lifting of the lever 60 and the rotation of the drum 65 is continued, the loop chain core cutter will be gradually pulled around to its initial position. As this occurs the drum .74, being rigidly secured to the arms 71, will rotate with the core cutter. The return of the drum 74 is therefore dependent upon the return movement of the loop chain core cutter. The smaller sections of the material will be held in contact with the peripheral portion of the drum 74: and move with the same, it

, not being required for the material to slide it. retracted the other half of the crescentover the drum while being pressed against lVhile the loop chain core cutter is being shaped mass ofcoal will also be broken up into smaller sections and then advanced toward the flight conveyor, where such sec tions will drop into the trough 75 and be moved by the laterally projecting flights 19 toward the rear end of the platform 10. A guide plate 76 may be provided in suitable position to direct the material away from the drum 74L and'into proper position with respect to the flight conveyor.

In practice I prefer to design and operate the machine in such a manner that two crescent-shaped masses of coal between the roof and the floor of the mine will be cut out during each arcuate feeding movement of the loop chain core cutter across the face of the mine wall, particularly when the material is quite hard and not easily broken into smaller sections for transfer to the conveyor. Itherefore provide a horizontal plane kerf cutter 100for dividing tne core cut by the core cutter into two sections 101 and 102, as shown in Fig. 2. However, when the material of such naturethat it is'easily broken, the dividing cutter 100 may be omitted. In thatevent I prefer to operate the machine in such manner that two sections of crescentshaped material between the floor and the roof of the mine wil be suflieient before the machine must be moved forwardly to a new position. Iprefer also to slice out the upper section first in order that the bottom of the horizontal kerf may act as a shelf for the cuttings produced by the loop chain core cutter. When these cuttings are ejected the forward lip of the platform should be in position to receive the same. The chain 82 being operated in the direction of the arrow 44, will cause the cuttings to be moved over the inclined surface 77 on to the platform from which they can -readily be scraped into the trough to be acted upon by the conveyor flights 19.

The forward lip 70' is adjustable longitudinally because it in reality forms a part of a supplemental platform 10, lilting in suitable grooves or guideways in the main platform 10. By means of a lever 78 pivoted to the supplemental frame at 7!) and having a pin and slot connection 80 to the supplemental platform 10. the latter may he moved forwardly or backwardly at will. In this manner the position of the lip 70' may be adjusted with respect to the mine wall and the lower horizontal kcrf.

In order to adjust the loop chain core cutter to the desired elevation for making a core cut across the mine wall, I provide mechanism for lifting and lowering the supplemental frame on the pivots 5. At one side of the main frame and connected rigidly to one of the vertical standards 6 is a forwardly extending bracket 81, the forward end of which is provided with an opening through which extends a screw-thrczulcd rod 82, the lower end of which is pi voted at 83 to a bracket fixed to the platform 10. and extending laterally therefrom indicated at 84- in Fig. 1.

By turning the wheel 85 which is screwthreaded onto the rod 82 the supplemental frame may be tilted on the pivots 5 and the loop chain core cutter and all parts associated therewith can thus be adjusted in elevation. For instance, the loop chain core cutter can be moved into position for making a cut across the upper portion of the mine wall, or into position for making a cut across the lower portion of the mine wall.

In order to shorten the width of the mining machine and enable the same to pass through narrower entries, the Sll])]ll(lll0llt:ll platform 10 may have a section thereof, such as that indicated by the reference character 10 in Fig. 1, provided with

hinges

86, 86, which will enable the section 10 lo be folded upwardly and over against the cylinder 74 when the loop chain core cutter is in the position illustrated in Fig. 2.

As before stated, when the nmtcrial to be mined is so hard that it is diliicult to break it up into smaller sections for loading. I prefer to add the horizontal plane kcrf cutter shown at in Figs. 1 and 2. This kerf' cutter 100 and the means for operating it constitute a self-contained mining device mounted on the plate 103 which is adapted to be detachably connected at 104C to one of the radial arms 71. as shown in Fig. 1. This self-contained mining device may be inserted through the opening 105 in the cylinder 74,

till

as shown in Figs. 1 and 8. This self-contained mining device is shown in elevation in 3, and in plan in Fig. 1. It should also be understood that the mining device shown. inFigs. 3 and 1 is detachably connccted in its entirety to the plate 103 at 106, 106, as shown in Fig. 1, lateral spaced apart perforated lugs 106 being provided for this purpose.

The plane keri cutter which is adapted to divide the crescentehaped of coal cut out by the loop chain core cutter, comprises a circular cutter support 107 which is detaehably connected by means of

bolts

103, 108 and

nuts

109, 109, to the housing 110, as shown in Figs. 3 and 41. On the periphery of the circular cutter support 107 is mounted the cutter frame ring 111, which is provided with a series of bit sockets with cutting tools 100 therein, as shown in Figs. 3, 1 and 7.

In order to drive the ring cutter a series of openings 112 is provided in the ring 111, in position to receive the teeth 113 of a sprocket 111 mounted in the housing 110, as shown. in Fig. 4:.

Secured to the end plate 110 is a casing 115, as shown in Figs. 3 and 1. The casing 115 may be 'detachably connected to the plate 110 by means of cap screws 116. It should be noted that the cutter support 107 is secured to the plate 110and the casing 115 is rigidly secured to the plate 103, which in, turn is rigidly secured to one 01" the arms 71, as shown in Fig. 1. The casing 115, together with the plate 1.10, entirely encloses the sprocket wheel 114: and the gearing for transmitting power thereto. The teeth 113 project through the bottom of one end portion of the casing 115, as shown in Fig. in position to mesh with the spaced apart openings 112 in the ring 111.

in order to rotate thepower transmission gearing within the casing 115, a motor 117 is mounted as shown in Figs. 3 and d. Preferably this motor 117 is an electric motor provided with a frame having bracket arms 113, which can be detachably connected to the casing 115 by means of cap screws 119. ll. coupling is provided at 120 to connect the motor shalt to the shaft 121. By means of this construction the motor may be removed and substituted or replaced by another according to the condition of the material upon which the plane kerl cutter is to opr ate.

'llhe shaft 121 is keyed to the inner hollow frame 122 which carries a bearing for th shaft 123, which is spaced radially from the shaft 121, shown in Fig. 1. The shaft 121 is extended loosely through the journal bearing 12 1, which is keyed at 125 to the ca ing 115. A stationary gear .126 extends around the journal bearing 121- on the inside oi the casing 115, in position to mesh with the gear 127, which is secured to one end oil? the shaft 123. Secured to the other end of the shaft 123 another gear 128, which meshes with the gear 129 on hub 130 of the sprocket wheel 11 1.

The inner end of the shaft 121 is of reduced diameter, as shown at 131 in Fig. 1, and extends into the journal bearing 132, which is supported by the plate 110 and secured to the latter by means otthe cap screw 133. It should be noted that the hub 130 is keyed to the sprocket wheel 11 1-, but is mounted loosely on the bearing 132. The latter therefore serves as a bearing for the sprocket wheel 11 1, together with the gear 129, and also as a bearing for the inner reduced end 131 of the shaft 121 The hub 1.30 its between the collar 13% of thebearing 132, and the plate 110. That portion of the bearing 132 which extends through the plate 110 is orreduced diameter to form a shoulder to lit against the inner side 01 the plate 110, so that the capsc-rew 133 may secure the bearing 132 rigidly to the plate 110.

The gearing in the casing 1151s diiierential to secure rotation 01 the sprocket wheel This may be done by n'oviding the gear 129 with more or less teeth than the gear 128. For instance, itthe gear 123 provided with one more tooth than the gear 129, the lat er will be rotated one tooth each time the gear 123 n'iakes a complete revolution around the axis of the gear 129. It should be understood that when the motor 117 rotates the shaft 121 the inner casing 122 will be rotated, thus causing the shaft 123 to revolve around the shaft 121. The gear 126 being held stationary relative to the frame 115 will cause the shaft 123 to be retatedby reason of the gear 127 meshing wit-h the gear 126. But the gear 128 also tends to walk around the gear 129, and since the gears128 and 129 have a different number of teeth a differential movement will be obtained so as to secure rotation oi? the sprocket 11 1 in the proper direction to rotate ring cutter 111 in a clockwise direction, as viewed in plan in Fig. 1. lit the direction of rotation of the ring cutter is not proper for effecting cutting, the motor 117 may bereversed to secure the desired direction 01 rotation of the cutter. A. high speed motor 117 may be used because the gearing in the casing 115 is reduction gearing which will secure the desired comparatively slow feeding movement 01" the ring cutter in conformance with the speed of feeding movement of the loop chain core cutter. The motor 11.7 being an electric motor, it may readily be controlled as to speed as well as direction of rotation to secure the desired speed of feeding movement of the ring cutter.

It should be particularly noted that, as

shown in Figs. 1 and 5, the gears 127 and 128 are entirely enclosed not only within the casing 115 but also within the frame 122. An accurate balance for the gears 127,128 and the shaft 123 may thus be secured relative to the axis of rotation of the frame122. Furthermore, the gears 127 and 128 are. not exposed to'the air or atmosphere'insuch manner as to act as fans and thus tend to consume power of the motor. It will thus be seen that both the balancing of the gears 127, 128, and the confining thereof so that they will not act as fans render the power transmission mechanism more efiicient than it would be if the frame 122 were not used.

The ring cutter 111 is provided with an inner peripheral groove 135 and the '(JIIZCLL lar support 107 is provided with a similar groove 136 to receive the balls 137 which are mounted in a ring cage 138. As shown in Figs. 9 and 10, this ring cage 138 maybe composed of a ring of metal through which holes 139 are bored radially to form partitions 140. WVhen the ring cutter 11.1 is to be assembled on the circular support 107 an opening 141 is drilled into the periphery of the support 107 and another hole is drilled through the lateral face of the support 107,

so as to communicate at 142 with the opening 141. A ring'plate 143 is placed in the position shown in Fig. 6 and the ring 111 is placed over the ring plate 143, a gasket being located at 144, which gasket fits into a circular groove on the lower side of the ring 111. The ring plate 143 fits into a cireular groove on the bottom of the support 107 so that the bottom surface of the ring plate 143 will be flush with the bottom surface of the support 107. Now, with the plate 145 still removed with the ball bearing' cage 138 may be placed on top of the plate 143 with none of the balls, as yet, in position. With the block 146 and the rivet 147 removed, or not as yet in position, the balls may be passed through the opening 142 into the space 141 and inserted one after another into the openings 139 in the ball bearing cage 138. After all of the balls have been inserted into the cage 138 the block 146 may be placed in the position shown in Fig. 6, so as to establish continuity of the ball bearing raceway 135, in the periphery 0f the support 107. The plate 145 may then be placed in position with the gasket 148 fitting in a circular groove on the upper side of the ring 111. The plate 145 is connected to the frame 107 so as to have its upper surface flush with the upper surface of the ring 111, and also flush with the outer upper surface of the support 107. A portion of the support 107 is cut away as illustrated at'149 to lessen the amount of material used in the support 107. After the plate 145 has been secured in position the various parts which have been assembled may be secured in adjusted relation by means of a series of spaced apart rivets 147, as shown in Figs. 4 and 6.

Before the parts shown in Fig. 6 have been assembled a suitable lubricant may be introduced into the circular chamber through which the balls 137 move. It should be noted that the joints 150 and 151 behvcen the

plates

145, 143 and the ring 111 are farther away from the center of rotation than the center of the ball bearing cage. The

plates

145 and 143 are riveted at 147 to the periphery of the support 107 inside of the ball bearing cage, thus securing a li uidtight joint betwcen these plates and the peripheral portion of the ring support 107. No dirt or foreign material can be drawn into the ball bearing by reason of the cent rifugal action thereof; on the contrary, the tendency of such centrifugal action is to throw out the heavier particles of foreign material through the joints 150 and 151.

The cutter bits 100' may be secured in the bit sockets 152 by means of the set screws 153 as shown in Fig. 7. Preferably, an opening extends entirely across the ring 111, as indicated at 154 in Figs. 4 and 7. In this manner a surface 155 is provided for the. rear side of the cutter shank 156, and a bearing face 157 is also provided for the triangular portion of the cutting tool, as shown in Figs. 4 and 7. Preferably, a notch 158 is reserved for the neck 159 of the cutter bit, as shown in Fig. 7. The cutter bits may then be re-sliarpened when they become dull, and reformed so that their cutting points will remain approximately equidistant from the center of the ring 111, and whenever the bits are reformed they may be shaped so as to rest against. the

surfaces

155 and 157, without extreme accuracy being necessary as to the neck 159, which may be located at the. notch 158.

Slots 160 are extended transwrscly through the ring 111 at the inner ends of the bit sockets. Such openings 160 facilitate cleaning of the bit sockets when the bits are to be inserted and also facilitate loosening the bits when they are to be removed.

As shown in Fig. 1, the plane kcrf cutter 1.00 is mounted on the rotating frame 21 so as to be fed with the loop chain kerf cutter. The plane kerf cutter 100 is mounted in position to cut a horizontal kerf in advance of the loop chain core cutter, but when the complete crescent-shaped mass of material comprising the upper and lower sections 101 and 102 has been cut out from the mine wall. such mass will be divided partially or completely by the horizontal kerf cut by the kerf cutter 100. The belt 64 is of sufiicicnt height to grasp both of the sections 101 and 102 when the loop chain kerf core cutter is held in the position shown in Fig. 1 and a pull exerted on the belt 64:. If the horisontal herf cutter has partially scparated the crescent-shaped mass, the pull exerted on the belt 04 will complete the worlr and both sections 101 and 102 will bebrolien into smaller sections as indicated by the dot and dash

lines

50, 57 and 58.

In the operation of the machine the motor 117 is started so as to rotate the plane hertcutter 100 in a clockwise direction as viewed. in plan in Fig. 1. The cutting apparatus is assumed to have been previously adjusted. to its proper inclination for the product-ion of a core cut across the mine wall, this being el'l'ccted by the operation of the wheel 55. Before the cutting operation is begun, the loop chain kert-cutter should be extended diametrically opposite the position shown in Fig. 1. Vilhcn the cutter firame is in this initial. position, the entire machine will be moved forward into a new posit-ion and, held in such adjusted position by means 01 the root jacks 8, 8. During the normal operation of the machine, the loop chain core cut ter will be in the said initial position with the plane l zcrt cutter 100 in advance thereof when the cutting apparatus to be readjusted vertically or both vertically and torwardly. Inasmuch as the core cutter frame 83 may have su'liicicnt width to act as a shell or carrier for the material cut out, it will hold up its end of the cutout crescentshaped mass o'l coal until ready to be broken into smaller sections and moved onto the plat form 10. If any material remains on the inner lower surface of the cutter frame 33 or on surface of cutter "frame 107, it will be forced off the same and onto the platform 10 inside of the belt 6 1 as soon as the new cut is begun.

i hen the machine is in readiness for the cutting to begin, the clutch 38 is thrown in to e'ltect the operation of the flight conveyer and of the

gears

20, 27, 28 and 29, which are connected to the sprocket wheel 31 and the chain to drive the latter in the direction oi the arrow 14%. diately thereafter, the clutch 51 is thrown in to etlect a pull on the rope 1-7 and the gradual feeding forward of the cutter frames 33 and 107 through an arc oi about 180, while the chain cutter is being driven and while the ring cutter is being rotated. hen the cutter frames and 107 reach their limiting positions, they will be automatically locked against retraction by the latch mechanism comprising the lever 60.

An entire crescent-shaped mass having been cut from the mine wall and divided by the plane ker'l cutter 100 into two sections 101 and 102, the clutch 51 is thrown out and ti a clutch 09 thrown A pull on the belt (it will then be exerted to break up into sina ler pieces the sections 101 and 102 just cut away lrozn the mine wall. in doing this,

there little or no tendency tor any At the same time or imrne the smaller sections o't coal will be moved iartiy or wholly onto the pl; oi-m 10 and wrapped around the drum 7 ;oon as this occurs, the lever 00 li id to release the latch mechanism whereiupon the pull on the belt 0t will start the cutter trainee-i 3. and 10'? on their return path-i to wore them to their initial positions. lhiring tieretraction oi the cutter frames 2-525 aiul 10?, the romainin portions oi? the crescci'l" isllllptul sections 101. and 102 will be brolren into smaller pieces and sldmtintially all of the wind will be carried into position to be acted upon by the flights 10. llQCltUF-Q the cutter 100 acts in adv: nee oi the core cutl lodged material to remain on the cut frame 102' after the loading operation has been completed.

During}; the retraction Oil the cutter frames 33 and 107, the spider frame with the cylindrical drum i l permanently secured tluu'cto will also be rotated in. a clockwise direction. After the core material has been wrapped against the drum l t, rotation of the lat the belt in directing the slodged material to the curved wall it; and into the trough 75 of the conveyor.

lily making a or cent shaped. sectional cut, in the upper p ion of the mine i .11 first, and t ion a similar cut inuncdi: .iy below the same, advantage may be taltcn oi? the lower surface of the horizontal lrer'lf cut by the core cutter, as a ledge or shelt from which the cuttings may be scraped by the chains onto the platform 10 from which they may be moved by the belt and the light conveyor 18, 19. l l hcncvcr desired,

the tlorward lip 70 of the supplemental plats form 10 may be adjusted in 130. operating the lever 78.

By providing an additional catch 87 in clined on its upper surface and ha vertical face to prevent retraction at th cutter tron by frame, and locating this additional catch in the position indicated in Fig.5. 1, the out sections of core material may be moved through short arcs. This may be done by releasing; lever 60 from the catch 59 when the clutch 00 is first thrown in to ex rt a pull on the belt 64-. As soon as the lever G0 is released from the latch 9, it may he allowed to engage the catch Eli when the latter has retatcd a sullicicnt distance. The itch it? will then be relied upon to hold the cutter lirames and 107 stationary while the pull on the belt 04: continues and while it is bein moved to the position shown by the dot and dash lit shown in Fig. l to break up the crescent shaped sections 101 and 102 into smaller sections.

it should. be understood that that portion of the mining;- machine shown in the drawings as operating on the face of the mine wall may be regarded asthe front of: the

' severed by the cutting mechanism.

mining machine; The operator may control all the operations from the rear of the mining machine because devices well known in the art may be provided for operating the lever 7 8, the wheel 85, the lever 60, and the electric switches and controllers for controlling the electric motors 9 and 117, from a suitable location back of the mining machine. By providing the flange at the lower portion of the drum 65 with a series of notches 88, this drum may be held from rotation by the pawl 89, which is pivoted at 90 to the supplemental frame. In this way, the drum 05 may be locked against rotation in either direction. lVhen the clutch 09 is released and the pawl 89 moved into one tinueto move wii'il'rthe cutter-

frames

33 and 107. The continued movement of the cutter frame 83 may, therefore, be relied upon when desired for breaking up the sections cut out even before the same are entirely severed from the mine wall. If the drum 05 is locked at the proper time, the belt 04: will reach the position shown by the dot and dash lines 64; in Fig. 1, when the cutter frames reach the full line positions shown in Fig. 1. It is also contemplated to operate the winding drum 65 to move the belt 04: to its dot and dash line position 64 while the cutter-frames are advancing, thereby breaking up the sections 101 and 102 by prying them from the mine wall while still integral therewith, or before any section is entirely These operations of locking the drum and also, when desired, operating the drum when the cutting mechanism is being fed, will increase the eliiciency of the apparatus by enabling the cutting mechanism to be restored to initial position soon after it makes a complete feeding movement.

It should be noted that the cutter frame 33, when in adjusted position, is rigidly connected to the frame 21 which constitutes a the upright axle on an upright axis. The

cutter-frame107 is also rigidly connected to the frame 21 and the ring-cutter 111 is always in position to cut a kerf which extends in a plane at right angles to the axis of swinging feeding movement of the loop chain core cutter. lVhen the wheel 85 is retated. to tilt the core cutter on the horizontal axis 5 the vertical axis of win in moveand enables the chamber to be cut without the use of props. In this way a self-supporting chamber having an arch-shaped roof which remains intact for a long icriod of time is produced. This arching of the roof is particularly desirable when there are strata of foreign material in the vein of coal somewhere between the floor and roof of the mine chamber. In that event. the plane kerf-cutter 100 may be positional so as to act on the stratum of foreign material to cut it out and. permit the cuttings of the foreign material to be deposited in the trough for removal indepemlontly of the removal of the coal. By referring to Fig. 1 it will be seen that the inner side of" the kcrf-cutier 100 extends to the trough 75 so that during the action of the plane kerf-cuiter on the stratum of foreign material, the cutter will throw the foreign material into the (rough 75 for removal by the flight conveyors before the coal is broken down and moved onto the conveyor. It should also be noted that notwithstanding the formation of the archshaped roof by the core cutter, the plane kerf-cutter may nevertheless be used to cut the sections 101 and 102 since the axis of rotation of the cutter 111 always remains )arallel to the axis of feeding movement o the core cutter.

Obviously those skilled in the art may make various changes in the details and an rangement of parts without departing from the spirit and scope of my invention as defined by the claims hereto appended. and it is therefore desired not to be restricted to the precise construction herein disclosed.

Having thus fully described an embodiment of my invention, what I claim and desire to secure by Letters Patent of the United States, is:

1. In a mining machine, the combination with a frame, of mechanism having an unobstructed core opening thercthrough and mounted on said frame for entirely cutting from a mine wall a crescent-shaped mass of material in a general horizontal direction, of additional cutting mechanism for dividing such crescentshaped mass into sections extending in a general horizontal direction, and means mounted on said frame near said cutting mechanism for cilecting mechanically the transfer of all of the dislodged mass of material in its solid state in large blocks from its cut position in the mine wall toward leading position.

2. A mining and loading machine comprising a supporting frame, a loop chain core cutter mounted on said frame, means for operating said loop chain eore cutter to cut a core of material in a mine wall, addi tional cutting mechanism for cutting a kerf' along the core, and means mounted on said frame and extending therefrom into position for acting on the core in its out position at the mine wall to move all of it directly away therefrom along said frame toward loading position.

A mining and loading machine comprising a supporting frame, a loop chain core cutter mounted thereon, means for operating said cutter to cut acore mass of material in its native bed, additional cutting mechanism for c tting a kerf along the core mass lcngitrulinally thereof, and power mechanism mounted on said frame and extending into position for taking substantially all of the cut material from the space assumed thereby after being cut and moving the same back from the unmined mass along said frame toward loading position. it i i i. A mining and loading machine comprising kerf-cutting mechanism including a divider for cutting from a mine wall a pre determined mass of material, and means operable in a mine chamber between the floor and roof thereof for moving the entire mass of severed material from the position assumed thereby after being dislodged from the mine wall, in a general horizontal direction along said mine chambertoward loading position. i

5. A mining and loading machine comprising a supporting frame, a loopchain core cutter mounted on said frame to extend out from the same, means for operating said cutter to cut a core mass of material in the mine wall, a plane kerf cutter mounted on said frame in position to cut a kerf in a plane intersecting the space within the boundary of said core cutter, and oower mechanism mounted on said frame to ollow said core cutter in position to act on the material in whatever condition it assumes of itself immediately after being cut, totake substantially all of it from a mine wall along said frame toward loading position.

6. A mining and loading machine comprising a supporting frame, a core-cutting mechanism having an unobstructed core opening therethrough and mounted on said frame for movement relatively thereto, and dislodging mechanism mounted in predetermined relation to said core-cutting mechanism and comprising a plane kerf-cutter also movable relatively to said frame for acting on the material in its out position in the mine wall and moving it directly therefrom toward loading position.

7; A mining and loading machine comprising a supporting frame, mechanism mounted on said frame for cutting a core by cutting on both sides of a body of material in a mine wall and at the back thereof, a plane kerf-cutter mounted on said frame in posi tion to cut a kerf longitudinally of said core between said sides thereof, and manually cont-rolled power mechanism mounted on said frame adjacent said core cutting mechanismfor effecting mechanically the transfer of the cut material from its outposition in the mine wall toward loading position independently of the ope ation of said corea cutting mechanism.

mounted on said frame for operating said .chaln cutter by actuating the same relatively to said guide frame and moving the latter to feed said chain cutter transversely to produce kerfs in a mineiwall above and below and at the back of a body of material while the latter remains in its native position,

means for producing a dividing kerf longitudinally of such body of material, means mounted on said frame and extending therefrom for breaking up the cutmaterial extending through said guide frame, mechanism mounted on said supporting frame for receiving the broken up material, and mechanism for transferring the broken material toward loading position.

In a mining machine, the combination with a supporting frame, of core-cutting mechanism mounted thereon, a kerf-cutter and power operating means for the same forming a detachable self-contained unit mounted on said frame in position to effect the cutting of a kerf longitudinally of the core cut by said. core-cutting mechanism.

10. In a coal mining machine, the combination with a supporting frame, of a loop chain core cutter having an unobstructed core-opening therethrough and having one of its runs in position to cut a plane kerf, a sep aratecutter for cutting a kerf in a plane extending through said unobstructed opening and parallel to said first named plane kerf, means for operating said loop chain core cutter, and said separate cutter including the feed thereof, and means for adjusting the position of said core cutter and said separate cutter while maintaining the aforesaid relation of the plane kerf cutthereby.

11. 'In a coal mining machine, the combination with a main frame, of a supplemental frame pivoted to said main frame, an up rightchain cutter carried bysaid supplemental frame and having upper and lower runs rectilinear in elevation, means for'op crating said chain cutter including feediiig movement thereof laterally relatively to said supplemental frame during the cutting operation to produce a core having upper and lower flat surfaces along such rectilinear portions of said cutter, tLH adClltlODELl cutter for cutting a plane kerf along the core between said flat surfaces, and means for ad usting -relatively to said main frame to move both of said cutters to various elevations.

12. A mining and loading machine comprising supporting famework, means mounted thereon for cutting spaced apart kerfs and a back intermediate kerf bounding acore of material, in a mine wall, conveyer mechanism-mounted on said framework to haveapredetermined relation thereto and to said cutting means, an additional kerf-cutv ter for slotting the core longitudinally, and

mechanism mounted on said framework intermediate said first-named cutting means and saidconveyer mechanism for taking the dislodged material at various heights directly from the space originally occupied thereby in its native bed and moving such material onto said conveyer mechanism.

13. Ina mining machine, the combination with a supporting frame, of loop chain core cutting,mechanism'mounted to swing on anupright axis on the forward portion of said frame, a plane kerf-cutter for cutting a kerf in a plane extending through said core cutting mechanism between spaced-apart runs thereof, means for operating said corecutting mechanism and said plane kerf-cutter including theswinging of both on said upright axis relatively to said supporting frame while thelatter remains stationary, and means for adjusting the elevation of the entire core-cutting mechanism and said plane kerf-cutter to predetermine the elevation of the core to be cut in 'a mine wall.

14. In a mining machine, the combination with a supporting frame, of core-cutting mechanism mounted thereon and having an unobstructed core-opening therethrough and a flat kerf-cutter in positionfor cutting a kerf in a plane extending through such opening and completely through the core cut by said core-cutting mechanism, said flat kerf-cutter being capable of cutting a kerf of greater depth than its radius, and means for operating said core-cutting mechanism and said flat kerf-cutter to effect the cutting of a plurality of cores.

15. In a mining machine, the combination with a supporting frame, of multiple corecutting mechanism mounted thereon and comprising a loop chain core cutter having a. core opening extending therethrough and a fiat kerf-cutter in position to cut akerf in a plane extending through said opening and completely through the core, and means for operating said multiple core-cutting mech- "anism including feedeof both said loop chain core-cutter and said plane kerf cutter to effeetthe cutting of a plurality, of cores.

16. In a mining machine, the combinationwith a loopchain core cutter having upper and lower spaced-apart runs rectilinear in elevation, said core cutter having an unobstructed core opening therethrough,

means for operating said loop-chain core cut' ter includin feed thereof laterally, a plane kerf-cutter for cutting a kerf in a plane extending through said opening, and means for adjusting the position of the entire chain cutter including such rectilinear portions to enable successive cuts to be made across the mine wall at various elevations in a coal mine while said plane kerf-cutter remains in posit-ion to cut a kerf extending through said openm 17. n a mining machine, the combination with a main frame, of a supplemental frame adjustably mounted on said main frame, a hub mounted on said supplemental frame to have an upright axis of rotation, a cutter frame extending radially from said hub and having an unobstructed core opening at its outer portion, an endless loop-chain cutter mounted on said cutter frame, another eutter frame extending radially from said hub, cutting mechanism mounted on said lastnamed cutter frame in position to cut a kerf in a plane intersecting said upright axis, means for operating said chain cutter and said cutting mechanism including feed thereof by lateral movement together with said hub on the upright axis of the latter, and means for adjusting the elevation of said supplemental frame relatively to said main frame to vary the height of said hub together with both of said cutter frames.

18. In a mining machine, the combination with a supporting frame, of a hub mounted on bearings on said frame, a cutter frame rigidly connected to said hub and extending radially therefrom and having a core opening therethrough, a loop chain core cutter mounted on said cutter frame, means for partially rotating said hub to 'ether with said cutter frame to effect feeding of said chain cutter, means for driving said chain cutter to cause the same to travel along said cutter frame transversely to the direction of feed thereof, an additional cutter frame rigidly connected to said hub to move bodily therewith, and plane flat kerf-cutting mechanism mounted on said additional cutter frame in position to cut a kerf in a plane extending through the aforesaid core opening and completely through the core. I

19. A mining machine comprising loopchain kerf-cutting mechanism, a main frame, a supplemental frame on which said cutting mechanism is mounted to swing in feeding direction at right angles to the plane thereof, a plane kerf-cutter on said supplemental frame in position to cut a kerf in a plane intersecting the plane of said firstaiamed cutting mechanism, and means for angularly adjusting the entire cutting mechanisms in the plane of the first-named cutting mechanism.

til)

roof of a mine chamber, and means movahle horizontally ban; from tie minewall along saidchamber to draw the cut material with it for breaking loose such cut material and moving it toward leading position;

22. A mining machine comorising a supporting frame, multiple core cutting mechanism mounted thereon for sin'mltaneousiy cutting spaced-apart keris and a back connecting kerf toform a column in mine wall and an intermediate herf to divide said column longitudinally, means for operating said cutting mechanism including the feed thereof to out such colun'inwith its dividing lszerf in a single operation along the mine wall, and means mounted on said frame and movable relatively thereto for breaking off pieces of the kerf-cut column and moving the same towards loading position.

23. In a mining machine, the combination with core-cutting mechanism, of plane kerfcutting mechanism, arcuate feeding means for both of said cutting mechanisms, and means for removing substantially all of the cut material from the position assumed thereby after being dislodged along a path concentric with the arcuate feed of said cut ting mechanisms.

24-. In a mining machine, the combination with a loop-chain core cutter having a core opening extending therethrough, of means for driving said core cutter, a flat kerf-cutter in position to cut a kerf in a plane extending through said opening to out entirely through the cut core, means for feeding both of said cutters, and means for removing substantially all of the cut material along the line of core-cutting feeding move ment.

25. A mining machine comprising corecutting mechanism have a core opening extending therethrough, a plane kerf-cutter for cutting a herf in a plane extending through said opening, means for feeding said core-cutting mechanism and said plane kerf cutter over arcuate paths of travel, and means operating in the kerf produced by said core-cutting mechanism to move the cut material away from the mine wall independently of the feed of said core-cutting mechanism. v

26. A mining machine comprising loopchain core-cutting mechanism, a frame, a cylinder mounted on said frame for movement circumferentially with said frame and with said cutting mechanism, a plane kerfcutter on said frame and projecting through an opening in said cylinder, and means cooperating with said frame and with said cylinder for breaking up material cutout by said loop-chain core-cutting mechanism by moving the cut material directly from the lninewall against said cylinder.

27. In a mining machine, the combination with a loop chain core cutter having an unobstructed core-opening therethrough, of a frame for supporting said corecutter for swinging movement on an upright axis, a drum rigidly secured to said frame inpositionto-interloop said core cutter and in position for the cuttings from the core cutter to move under said drum toward said up- 1 right axis, and mechanism cooperating "with said drum for breaking up the material cut out by said core cutter. a i

28. A mining machine comprising a supporting frame, a swinging frame pivoted thereto and having a spider arm hub, a loopchain core cutter mounted on said hub, and a plane kerfcutter mounted on said hub to move bodily therewith. i

29. In a mining machine, the combination with core-cutting mechanism, of a plane kerf-cutter for cutting a kerf in a plane extending through said core-cutting mecha nism, means for operating said core cutting mechanism and said kerf-cutter to effect the dislodgment of a divided crescentshaped mass of material from the mine wall, and flexible means connected to said core-cutting mechanism in position to engage the dislodged material and move thesame back from the mine wall.

30. A mining machine comprising a supporting frame, kerf-cutting mechanism for cutting spaced-apart upper and lower kerfs and an upright back kerf communicating with each other to cut a core in a mine wall leaving the forward end thereof integral with such mine wall, means for cutting a dividing kerf along suchcore, and mechanism mounted on said frame and extending therefrom in position to penetrate the vertical kerf and break the divided portions of the core from the unmined mass.

31. In a mining machine, the combination with asupporting frame, of core-cutting mechanism mounted thereon, means for operating said core-cutting mechanism, and a flat kerf-cutter in position to cut a plane kerf longitudinally of and completely through the core cut by said core-cutting mechanism, said flat kerf-cutter being capable of cutting a kerf of greater depth than its radius.

32. In a mining machine, the combination with a supporting frame, of a loop chain with a supporting frame, of core-cutting mechan 1sm .mounted thereon for arcuate swinging'feeding movement, a flat'kerf-cutter mounted onsaid frame to have an arcuate swinging feeding movement in position tocut aplane kerf longitudinally of the core and completely through the same, said flat kerf-cutter being capable of cutting a kert of greajter depth than its radius, and means foroperating said core-cutting mechanism and said flat 'kerf-eutter to-efi'ect the cutting of such core and the cuttingof such longitudinal kerf.

34. In a mining machine, the combination with a supporting frame, of core-cutting mechanism mounted, thereon, a self-contained power-operated kerf-cutter mounted on said frame in position to effect the cutting of a kerf longitudinally of the core cut by said core-cutting mechanism, said kerf-cutter being capable of cutting a kerf of greater depth than its radius, and means for operating said core-cutting mechanism to drive the same independently of the drive of said kerf-cutter whereby the driving of the kerf-cutter may be regulated in accordance with the feed independently of the regulation of the drive of the core-cutting mechanism.

35. In a mining machine, the combination with a supporting frame, of core-cutting mechanism mounted thereon for arcuate swinging movement on an upright axis, a flat kerf-cutter mounted on said frame to have an arcuate swinging feeding movement in position to cut a plane kerf longitudinally of the core and completely through the same, said flat kerf-cutter being capable of cutting a kerf of greater depth than its radius, and means for operating said core-cuttin mechanism and said flat kerf-cutter to e ect the cutting of such core along the face of the mine vein and the cutting of such longitudinal kerf.

In testimony whereof I have signed my name to this specification on this 18th day of November, 1922.

EDMUND C. MORGAN.